/Engine/Plugins/Animation/ControlRig/Source/ControlRig/Public/Rigs/RigHierarchyDefines.h
Creates a collection containing all keys of a hierarchy
static [FRigElementKeyCollection](API\Plugins\ControlRig\Rigs\FRigElementKeyCollection) MakeFromCompleteHierarchy ( [URigHierarchy](API\Plugins\ControlRig\Rigs\URigHierarchy) * InHierarchy, uint8 InElementTypes )